/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

// refresh.h -- public interface to refresh functions

#define	MAXCLIPPLANES	11

#define	TOP_RANGE		16			// soldier uniform colors
#define	BOTTOM_RANGE	96

//=============================================================================

typedef struct efrag_s
{
    struct mleaf_s		*leaf;
    struct efrag_s		*leafnext;
    struct entity_s		*entity;
    struct efrag_s		*entnext;
} efrag_t;

#define MAX_CLIENT_ENT_LEAFS 128
typedef struct entity_s
{
    qboolean				forcelink;		// model changed

    int						update_type;

    entity_state_t			baseline;		// to fill in defaults in updates

    double					msgtime;		// time of last update
    vec3_t					msg_origins[2];	// last two updates (0 is newest)
    vec3_t					origin;
    vec3_t					msg_angles[2];	// last two updates (0 is newest)
    vec3_t					angles;
    struct model_s			*model;			// NULL = no model
    struct efrag_s			*efrag;			// linked list of efrags
    int						frame;
    float					syncbase;		// for client-side animations
    float					distance;		// alpha depth sort
    byte					*colormap;
    int						effects;		// light, particals, etc
    int						skinnum;		// for Alias models
    int						visframe;		// last frame this entity was found in an active leaf
    int						lightTimestamp; //PENTA:

// FIXME: could turn these into a union
    int						trivial_accept;
    struct mnode_s			*topnode;		// for bmodels, first world node
    //  that splits bmodel, or NULL if
    //  not split
    //PENTA
    vec3_t	                color;
    float	                alpha;
    int		                style;
    int		                light_lev;
    int		                pflags;

    // Animation interpolation (Based on QuakeForge)
    float                   frame_start_time;
    float                   frame_interval;
    float					blend;
    int                     pose1;
    int                     pose2;

    // frame instant chain
    struct                  aliasframeinstant_s *aliasframeinstant;
    void                    *brushlightinstant;

    //PENTA:
    int			            numleafs;
    short		            leafnums[MAX_CLIENT_ENT_LEAFS];

    //Erad - t lerp variables
    float                   translate_start_time;
    vec3_t                  origin1;
    vec3_t                  origin2;
    float                   rotate_start_time;
    vec3_t                  angles1;
    vec3_t                  angles2;
} entity_t;

// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct
{
    vrect_t		vrect;				        // subwindow in video for refresh
    // FIXME: not need vrect next field here?
    vrect_t		aliasvrect;			        // scaled Alias version
    int			vrectright, vrectbottom;	// right & bottom screen coords
    int			aliasvrectright, aliasvrectbottom;	// scaled Alias versions
    float		vrectrightedge;			    // rightmost right edge we care about,
    //  for use in edge list
    float		fvrectx, fvrecty;		    // for floating-point compares
    float		fvrectx_adj, fvrecty_adj;   // left and top edges, for clamping
    int			vrect_x_adj_shift20;	    // (vrect.x + 0.5 - epsilon) << 20
    int			vrectright_adj_shift20;	    // (vrectright + 0.5 - epsilon) << 20
    float		fvrectright_adj, fvrectbottom_adj;
    // right and bottom edges, for clamping
    float		fvrectright;			    // rightmost edge, for Alias clamping
    float		fvrectbottom;			    // bottommost edge, for Alias clamping
    float		horizontalFieldOfView;	    // at Z = 1.0, this many X is visible
    // 2.0 = 90 degrees
    float		xOrigin;			        // should probably allways be 0.5
    float		yOrigin;			        // between be around 0.3 to 0.5

    vec3_t		vieworg;
    vec3_t		viewangles;

    float		fov_x, fov_y;

    int			ambientlight;
} refdef_t;

//
// screen size info
//
extern	refdef_t	        r_refdef;
extern	entity_t	        r_worldentity;
extern	entity_t	        *currententity;
extern	struct texture_s	*r_notexture_mip;

//
// refresh
//
extern	int			        r_visframecount;	// ??? what difs?
extern	int			        r_framecount;
extern	int			        r_lightTimestamp;   //PENTA: we need this in different files
extern  vec3_t	            r_origin;
extern	vec3_t		        r_entorigin;


void R_Init (void);
void R_InitTextures (void);
void R_InitEfrags (void);
void R_RenderView (void);		// must set r_refdef first
void R_ViewChanged (vrect_t *pvrect, int lineadj, float aspect);
// called whenever r_refdef or vid change
void R_InitSky (struct texture_s *mt);	// called at level load
void R_LoadSkys (void);
void R_ClearSkyBox (void);
void R_DrawSkyBox (void);

void R_AddEfrags (entity_t *ent);
void R_RemoveEfrags (entity_t *ent);

void R_NewMap (void);
void R_InitParticleEffects(void);
void R_ParseParticleEffect (void);
void R_ParseBasicEmitter (void);
void R_ParseExtendedEmitter (void);
void R_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count);
void R_RocketTrail (vec3_t start, vec3_t end, int type);
void R_EntityParticles (entity_t *ent);
void R_BlobExplosion (vec3_t org);
void R_ParticleExplosion (vec3_t org);
void R_ParticleExplosion2 (vec3_t org, int colorStart, int colorLength);
void R_LavaSplash (vec3_t org);
void R_TeleportSplash (vec3_t org);

//
// surface cache related
//
extern qboolean	r_cache_thrash;	// set if thrashing the surface cache
